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[SCSI] libiscsi, iscsi_tcp: iscsi pool cleanup

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iscsi_pool_init simplified

iscsi_pool_init currently has a lot of duplicate kfree() calls it does
when some allocation fails. This patch simplifies the code a little by
using iscsi_pool_free to tear down the pool in case of an error.

iscsi_pool_init also returns a copy of the item array to the caller.
Not all callers use this array, so we make it optional.

Instead of allocating a second array and return that, allocate just one
array, of twice the size.

Update users of iscsi_pool_{init,free}

This patch drops the (now useless) second argument to
iscsi_pool_free, and updates all callers.

It also removes the ctask->r2ts array, which was never
used anyway. Since the items argument to iscsi_pool_init
is now optional, we can pass NULL instead.

Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Olaf Kirch
2007-12-13 12:43:25 -06:00
committed by James Bottomley
parent 38ad03de3f
commit 6320377fd9
4 changed files with 50 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/iscsi_tcp.c
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@@ -1998,8 +1998,7 @@ iscsi_r2tpool_alloc(struct iscsi_session *session)
*/
/* R2T pool */
if (iscsi_pool_init(&tcp_ctask->r2tpool, session->max_r2t * 4,
(void***)&tcp_ctask->r2ts,
if (iscsi_pool_init(&tcp_ctask->r2tpool, session->max_r2t * 4, NULL,
sizeof(struct iscsi_r2t_info))) {
goto r2t_alloc_fail;
}
@@ -2008,8 +2007,7 @@ iscsi_r2tpool_alloc(struct iscsi_session *session)
tcp_ctask->r2tqueue = kfifo_alloc(
session->max_r2t * 4 * sizeof(void*), GFP_KERNEL, NULL);
if (tcp_ctask->r2tqueue == ERR_PTR(-ENOMEM)) {
iscsi_pool_free(&tcp_ctask->r2tpool,
(void**)tcp_ctask->r2ts);
iscsi_pool_free(&tcp_ctask->r2tpool);
goto r2t_alloc_fail;
}
}
@@ -2022,8 +2020,7 @@ r2t_alloc_fail:
struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
kfifo_free(tcp_ctask->r2tqueue);
iscsi_pool_free(&tcp_ctask->r2tpool,
(void**)tcp_ctask->r2ts);
iscsi_pool_free(&tcp_ctask->r2tpool);
}
return -ENOMEM;
}
@@ -2038,8 +2035,7 @@ iscsi_r2tpool_free(struct iscsi_session *session)
struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
kfifo_free(tcp_ctask->r2tqueue);
iscsi_pool_free(&tcp_ctask->r2tpool,
(void**)tcp_ctask->r2ts);
iscsi_pool_free(&tcp_ctask->r2tpool);
}
}